Nanobob: a CubeSat mission concept for quantum communication experiments in an uplink configuration Erik Kerstel, Arnaud Gardelein, Mathieu Barthelemy, The CSUG Team, Matthias Fink, Siddarth Koduru Joshi and Rupert Ursin EPJ Quantum Technol., 5 1 (2018) 6 Published online: 22 June 2018 DOI: 10.1140/epjqt/s40507-018-0070-7